Cisco Patches CVE-2025-20236: Unauthenticated RCE Flaw in Webex App via Malicious Meeting Links - #CVE-2025-20236
Cisco has recently addressed a critical security vulnerability in its Webex App, identified as CVE-2025-20236, with a high-severity CVSS score of 8.8. This flaw allows unauthenticated remote code execution through malicious meeting invite links, exploiting insufficient input validation in the app's custom URL handling mechanism. The vulnerability affects multiple versions of the Cisco Webex desktop application, potentially enabling attackers to trick users into downloading arbitrary files and executing arbitrary commands on their devices. Cisco has promptly released security updates and mitigation instructions for affected versions. Users are strongly advised to verify their Webex App version and update it if necessary to protect against potential exploitation. Notably, at the time of the advisory, no instances of malicious use or public exploitation of this vulnerability had been reported.